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“Tankersley says while the cosmic strike had an immediate and deadly effect, the long term side effects were far more devastating, similar to Krakatoa's aftermath but many times worse, thus making it unique in modern human history. In the cataclysm's wake, toxic gas poisoned the air and clouded the sky, causing temperatures to plummet. The roiling climate challenged the existence of plant and animal populations, and it produced what Tankersley has classified as 'winners' and 'losers' of the Younger Dryas. He says inhabitants of this time period had three choices: relocate to another environment where they could make a similar living; downsize or adjust their way of living to fit the current surroundings; or swiftly go extinct. 'Winners' chose one of the first two options, while 'losers,' such as the woolly mammoth, took the last.” — Brien Foerster